Effect of thiazolidinedione phenylacetate derivatives on wound-healing activity

The aim of this work was to evaluate the synthesis and structure-activity relationship of 4-((2,4-dioxothiazolidin-5-ylidene)methyl)phenyl 2-phenylacetate derivatives as potential wound-healing agents. The IC50 values of the lead compounds ranged from 0.01 to 0.05 mu M. These compounds also increased the levels of extracellular prostaglandin E-2 (PGE(2)) in A549 cells. Among the synthesized compounds, compounds 66, 67, 69, and 86 increased PGE(2) levels 3- to 4-fold of those achieved with the negative control. Introduction of a halogen at the intermediate phenyl ring, compounds 66, 67, 69, and 86 resulted in higher IC50 values, which indicated lower cytotoxicity than that observed upon the introduction of other substituents at the same position. In particular, cells exposed to compound 69 showed significantly improved wound healing, and the wound closure rate achieved was approximately 3.2-fold higher than that of the control. Therefore, compound 69 can be used for tissue regeneration and treatment of diverse diseases caused by PGE(2) deficiency. Overall, our findings suggested that compound 69 might be a novel candidate for skin wound therapy.